US2434281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass and method of making same
Assignee: American Optical Corp
•
Filing: 1942-05-15
•
Granted: 1948-01-13
•
Expires: 1962-05-15
Abstract
No abstract record available.
Inventors
- 👤 Harold R Moulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:29
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189407281A
Cited
US295410A
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US339525A
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US1933739A
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DE360342C
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US1736642A
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US2065502A
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US2326059A
Cited
US2241249A
Cited
US2215209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |